Method of extracting iron.



G. G. P. DE LAVAL,

METHOD or EXTRAGTING mow.

APPLICATION FILED OUT. 19, 1907,

Patented Feb. 23, 1909.

CARL GUSTAF PATRIK DE LAVAL, OF STOCKHOLM, SWEDEN.

METHOD OF EXTRACTING IRON.

Specification of Letters Patent.

Patented Feb. 23, 1909.

Application filed October 19, 1907. 8e1ial No. 398,209.

To all whom it may concern:

Be it known that I, CARL GUSTAF PATRIK I E LAVAL, doctor of philosophy and en i neer, a citizen of Sweden, residing at Stoc holm, Sweden, have invented new and useful Improvements in the Methods of Extracting Iron, of which the following is a specification.

The present invention refers to a method of extracting iron from a finely pulverized charge of iron ore, carbon and slag produc ing agents, consisting therein, that said charge in a thin la er is brou ht into contact with a heated sur ace, whereby the required reduction is carried out. The method is properly made continuous by introducing the charge continually and with roper speed into a vertical shaft, which is eated from the out-1:; side, and in which the charge'by means of rotating vanes or the like is thrown in a thin layer towards the heated wall of the shaft, whereby it gradually moves downwards and is gathered in a reduced condition in a chamber underneath the shaft.

The drawin shows a vertical section of an apparatus; which may be emplo able for carryingout the method above escribed.

1 indicates a vertical shaft, which is heated by introducing hot gases in the s ace be tween the shaft 1 and the brickwor 2 surroundin the shaft. 3 indicates the inlet and 4 t e outlet of said gases. Centrally through the roof of the shaft 1 extends a pipe 5, in which opens a screw conveyor 6 or the pulverized charge. A shaft 7 extends through the pipe 5 centrally, which shaft can be rotated from the pulley 8. The shaft 7 carries a disk 9 underneath the lower opening of the pi e 5, to which disk are fixed vanes 10, w ich are arranged in the form of a cross. The vanes exteiid nearly to the wall of the shaft 1, as shown on the drawing. The shaft 1 is funnel shaped below and'opens in a chamber 11, in which the reduced charge gathers and from which it can be taken out through the opening 12.

The pulverized charge, which may be composed in any well known manner for reduc lng iron from iron ore, thus generally spoken of iron ore, carbon andslag producing agents,

may be-led to aregenerator, if desired, in,

which the ases, necessary for heating the shaft 1, are eated.

What I claim is:

1. The method of extracting iron from a pulverized charge, consisting in introducing said pulverized charge continually in the 'upper part of a vertical shaft, heated from the outside, and subjecting the charge to the influence of the centrifugal"force in said shaft, so as to be thrown towards the wall of the shaft. v

2. The method of extracting iron from a pulverized charge of iron ore and reducing agents, consisting in introducing said pulverized charge continually in a vertical shaft, heated from the outside, and throwing the charge by mechanical means towards the wall of the shaft.

3. The method of extracting iron from a pulverized charge of iron and reducing agents, consisting in introducin the charge continually in a vertical shaft, reated from the outside, and bringing the charge in con tact with the inner wall of said shaft.

4. A method of extracting iron from a pulverized charge, consisting in introducing said pulverized charge into the upper part of an upright heated shaft, and spreading said charge over the inner surface of said shaft.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

CARL GUSTAF PA'lltlK DE HAVAL.

Witnesses:

WOLDEMAR BOMAN, I. EKEBonM. 

